Stent delivery system
First Claim
1. A delivery system for implantation of a self-expanding stent within a body lumen, comprising:
- a delivery assembly includingan elongated catheter having proximal and distal ends, the distal end configured to receive on an exterior thereof the self-expanding stent;
an elongated sheath having proximal and distal ends and formed with a lumen to slidably receive the catheter, and having an open-ended receptacle at the distal end for receiving the self-expanding stent;
a manipulator having a stem axially movable relative to the manipulator, the stem connected to the proximal end of the sheath to adjust an axial position of the sheath relative to the catheter, and wherein the proximal end of the catheter is selectively positioned to engage the manipulator, wherein the manipulator further includes a handle having a hollow tube receiving the proximal end of the sheath, the handle having an elongated slot through which the stem extends, and the handle having a distal end adjustable connected to the proximal end of the sheath; and
a stop disposed on an exterior of the catheter proximal to the self-expanding stent to prevent the stent from moving proximally during relative movement between the sheath and the catheter; and
a guide catheter having a proximal end, and formed with a lumen for receiving the delivery assembly therein, and wherein the proximal end is connected to the manipulator.
1 Assignment
0 Petitions
Accused Products
Abstract
A stent delivery system with a stabilizing manipulator handle is disclosed. The system has a self-expanding stent in a contracted condition disposed on the distal end of a delivery catheter and a retractable sheath covering the stent. The delivery catheter is advanced through a guide catheter to a desired location within a patient'"'"'s body lumen. The manipulator handle at the proximal end of the delivery catheter is attached to the guide catheter. The handle has a slidable stem connected to the sheath, and features a screw down spacer between the distal end of the handle and the proximal end of the guide catheter. The spacer situates the position of the guide catheter relative to the delivery catheter even during deployment of the stent. Once the stent is at the target site, the sheath is retracted by pulling back on the stem to expose the self-expanding stent. A stop on the interior of the delivery catheter positioned proximal to the stent further prevents the latter from moving out of position when the sheath is retracted.
439 Citations
22 Claims
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1. A delivery system for implantation of a self-expanding stent within a body lumen, comprising:
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a delivery assembly including an elongated catheter having proximal and distal ends, the distal end configured to receive on an exterior thereof the self-expanding stent; an elongated sheath having proximal and distal ends and formed with a lumen to slidably receive the catheter, and having an open-ended receptacle at the distal end for receiving the self-expanding stent; a manipulator having a stem axially movable relative to the manipulator, the stem connected to the proximal end of the sheath to adjust an axial position of the sheath relative to the catheter, and wherein the proximal end of the catheter is selectively positioned to engage the manipulator, wherein the manipulator further includes a handle having a hollow tube receiving the proximal end of the sheath, the handle having an elongated slot through which the stem extends, and the handle having a distal end adjustable connected to the proximal end of the sheath; and a stop disposed on an exterior of the catheter proximal to the self-expanding stent to prevent the stent from moving proximally during relative movement between the sheath and the catheter; and a guide catheter having a proximal end, and formed with a lumen for receiving the delivery assembly therein, and wherein the proximal end is connected to the manipulator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A delivery system for implanting a self-expanding stent within a body lumen, comprising:
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an elongated catheter having a proximal end and a distal end, wherein the stent is disposed on the catheter at the distal end; a sheath having a proximal end and an open distal end, coaxially and slidably disposed over the elongated catheter, wherein the open distal end overlies the stent; a manipulator for selectively positioning the proximal end of the catheter, the manipulator further including a radial stem connected to the proximal end of the sheath, wherein movement of the radial stem translates the sheath relative to the catheter; wherein the proximal end of the guiding catheter is spaced apart from the manipulator and includes a telescoping spacer connecting the manipulator to the proximal end of the guiding catheter; and a guiding catheter having a proximal end and a lumen adapted to receive the sheath, catheter, and stent therein, wherein the proximal end is connected to the manipulator. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A method for delivering for implantation a self-expanding stent within a body lumen, comprising:
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providing an elongated catheter having a proximal end and a distal end; disposing the stent on the catheter at the distal end; slidably disposing a sheath having a proximal end and an open distal end coaxially over the elongated catheter so that the open distal end at least partially overlies the stent; providing a manipulator having a stem connected to the proximal end of the sheath; connecting the proximal end of the catheter to the manipulator; providing a guiding catheter having a lumen adapted to receive the sheath, catheter, and stent therein; providing telescoping spacers connected to the manipulator and to the guiding catheter at opposite ends, the telescoping spacers having a threaded screw passing radially therethrough; and displacing the stem to slidably translate the sheath relative to the catheter to expose the stent. - View Dependent Claims (19, 20, 21, 22)
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Specification